2024 · M/J · 0625/31 | Q3

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Question (3 of 11)4 marks · Practise this topic →

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Available practice: 46 of 80 marks. Parts 1(a)(iii), 2(a), 3(b), 5(b)(i), 5(b)(ii), 6(b)(i), 7(c)(ii), 8(a)(ii), 8(c), 9(b)(i), 9(b)(ii), 10(a)(i), 10(c) await marking support. Scores cover available parts only.

Fig. 3.1 shows the horizontal forces acting on a boat.

(a)(i)Calculate the resultant horizontal force on the boat in Fig. 3.1. State the size and the direction of the resultant force.

Fig. 3.1 — see the question text for what it shows

Answer guidance

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

[2 marks]

Fig. 3.1 shows the horizontal forces acting on a boat: an 80 N force backwards and a 200 N force forwards.

(a)(ii)Suggest what causes the 80 N force on the boat in Fig. 3.1.

Answer guidance

Suggest More than one answer may be acceptable, so long as it is consistent with the physics.

[1 mark]

Another boat is travelling and the horizontal forces on this boat are balanced.

(a)(iii)Describe the horizontal motion of this boat.

Answer guidance

Describe Say what happens, in order. Reasons are not required unless the question also asks why.

[1 mark]

0625/31/M/J/24Cambridge IGCSE Physics 0625 · May/June 2024 · Paper 3 variant 1 · Question 3